Wiebetech RTX400H-NJ. Size: 88.9 mm (3.5 "), Hard drive interface: Serial ATA, Serial ATA II. Compatible operating systems: Windows XP/Server 2003/Vista Mac OS X 10.2.6 Linux. Colour of product: Black. Dimensions (WxDxH): 177 x 270 x 231 mm, Weight: 7650 g. Power requirements: 100-240 V